Sökning: "Defect"

Visar resultat 16 - 20 av 798 avhandlingar innehållade ordet Defect.

  1. 16. Investigations on the Formation of Defect Bands in Semi-Solid High Pressure Die Cast Aluminium-Silicon Alloys

    Författare :Madeleine Law; Pär Jönsson; Christopher Hulme-Smith; Taishi Matsushita; Jessica Elfsberg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Semi-Solid Metals; SSM; Al-Si Alloys; Defect bands; HPDC; Semisolida metaller; SSM; Al-Si-Alloys; defektband; HPDC; Metallurgical process science; Metallurgisk processvetenskap;

    Sammanfattning : High-pressure die casting of semi-solid aluminium-silicon alloys is used in the automotive industry to manufacture components, like housings, brackets, and bars. It is commonly known that during high-pressure die casting, defect bands may be created that follow the contour of the component surface. These bands consist mainly of a eutectic phase. LÄS MER

  3. 17. Secundum atrial septal defect in the adult. Clinical, haemodynamic and electrophysiological aspects

    Författare :Ulf Thilén; Kardiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MRI; clinical outcome; atrial fibrillation; Atrial septal defect; atrial conduction; remodelling.;

    Sammanfattning : Atrial septal defect (ASD) is the most common congenital heart malformation diagnosed in adult life. In this thesis important clinical, haemodynamic and electrophysiological aspects of ASD in the adult are explored. LÄS MER

  4. 18. Robotic in-line quality inspection system for Zero-Defect Manufacturing : Requirements and Challenges

    Författare :Victor Azamfirei; Yvonne Lagrosen; Anna Granlund; Foivos Psarommatis; Rikard Söderberg; Mälardalens universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; automation; industrial robot; sensor; in-line quality inspection; Zero-Defect Manufacturing ZDM ; Innovation and Design; innovation och design;

    Sammanfattning : The modern manufacturing paradigm is characterised by an increased level of competition, growing demand for customisable or one-of-a-kind products, and stricter sustainability requirements. To maintain their competitiveness, manufacturing companies must adapt their processes frequently and efficiently while providing high-quality products. LÄS MER

  5. 19. Improving Defect Management in Automotive Software Development, LiDeC---A Light-weight Defect Classification Scheme

    Författare :Niklas Mellegård; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Classification of software defects is a means to provide defect reports with a shared and well-defined structure. Quantitative analyses of the classification data facilitated by the shared structure are useful to industry practitioners and academic researchers. LÄS MER

  7. 20. Defect Thermodynamics and Kinetics in Polyanionic Cathodes : A Theoretical Roadmap for Na-ion based Batteries and Hybrid Supercapacitors

    Författare :Teeraphat Watcharatharapong; Rajeev Ahuja; Sudip Chakraborty; Jan Isberg; Palani Balaya; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; DFT; Energy Materials; Defects; Chemical potentials; Kinetics; Hybrid supercapacitors; Na-ion batteries; Polyanionic cathodes;

    Sammanfattning : In this thesis, the framework of the density functional theory is employed to study and predict properties of polyanionic cathodes for Na-ion batteries and hybrid supercapacitors. It consists of three main parts as follows:The first part is primarily dedicated to kröhnkite-type Na2Fe(SO4)22H2O cathode. LÄS MER